Electric-current interrupting and varying apparatus.



PATENTBD MAR. 19, 1907.

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A l E. BAGHELET. Hmmm GURRENT INTERRUPTING AND VAR-YING'PPARATUS.

APPLICATION FILED JAN. 9, 1906. 4

No. 847,877. PATENTE!) MAR. 19, 1907. i

E. BAGHELET. y LECTRIG CURRENT NTERRUPTING AND VARYING APlIMEATILS"` APPLICATION PLED JAH. 9, 1906.

3 SHEETS-SHEET Z.

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PATRNTRDMAR 19, 1907.

Not 847,877.

R.y BAGHELRT. 1G CURRENT INTRRRUPTING ARD VARYING APPARATUS.

ELEGTR APPLICATION FILED JAN. 9, 1906.

3 SHEETS-SHEET 3.

@Wie/mame EMILE EACHELET, OF NEW YORK, N. Y.

ELEOTRICGURFIENT INTERRUPTING `AND VAYING APPAR-ATUS.

I Specification of Letters Patent.

Patented Maren 19,1907.

Application filed JanuaryQ, 1906" Serial No. 295,213. v

To @ZZ whom it may concern:

Be it known that I, EMiLii BACHELET, of New York, inthe county of New York and State of New York, have invented certain new and useful Improvements in Electric- Current Interrupting and Varying Apparatus; and I hereby declare that the following -is a full, clear, and exact description thereof, reference' being had to the accompanying drawings, which form tion.

This' invention is -animprovement in elecpart of this speciiicatromagnetic apparatus, and particularly designed for use in connection witha magneticfield-generating apparatus, for wlnch Letters Patent of the United States'No. 743,372 and rheostat or resistance,

-will of the operator.

No. 743,373 were granted to me on the3d day of N vmber, 1903.

The invention comprises a transformer, p'erferably a rotary transformer or dynainotor, adaptedl to transform a direct current into an alternating current or an alternating current into a direct current, and a doublepole double-throw switch by which either the supplied or derived current can be thrown ito the two main conductors and'of the machine; The two main conductors are branched, and in each branch is interposed a preferably containing lamps, so that the amount of current passing through either branch can be regulated at the Suitable electrical connections and switches are provided by which the main or derived current, direct or alternating, may be taken from either main conductor direct to the-electroreceptive device which in the present instanceis electromagnetic-field generator.' A rotary interrupter is interposed in the circuit and is preferably attached to or directly driven by the rotary transformer or otherv electrical driving device at a ,constaiit uniform speed. Such interrupter is designedto produce a certain number of interruptions iii the curi'ent for each rotation. In the example shown the interrupter is designed to make itself but two interruptions in the circuit at each rotation. -As itl` 4is desirable iii many instances to increase or lessen or vary the number of interruptions made in the current at a given time, the principal object of the invention is to enable this desired variation iii the frequency of the interruptions to be accomplished without varying the speed.

of the interrupter and .the transformer or .a therapeutic motor by which the interrupter is driven, and to this end I provide in combination with the continuously uniformly driven interrupter what may be termed switch, which is interposed in the circuit.

between the interrupter and the electroreceptive device and by means of which and suitable electrical connections the current transmitted to the receptive device can be 65 interrupted or broken a more or less number of times at the will of the operator .by simply varying or shifting the position ofthe frequency-varying switch or controller, as it maybe termed, without changing the speed 7o of the motor or interruptor and without increasing or varying the amount of power of current required to maintain of rotation of the interrupter.

Heretofore in order to vary of the interruptions of the current it has been necessary to change the speed of the interrupter either by increasing or diminishing the current applied to the motor by the introduction or cutting out of resistances iii the 8o main circuit, or by changing the powerA of the field, or using some device for increasing or diminishing induction in the apparatus. All of such devices are expensive in operation and wasteful of power, and the necessity for 8 5 'their use is avoided by my present invention,

and the frequency of the current can be changed by simply shifting-the frequencyvarying switch to the desired position.

While the invention is to any luse or purpose in the arts in w ich the variations in interruptions of a current are desired, I particularly design it for use witlr my electromagnetic therapeutic apparatiis, such as shown and described in my 95 aforesaid. Letters Patent, in which 'apparatus I employ two coacting electioinagnets which are energized by the passage' of an electric current and set 'up a vibrating magnetic iield of force. sirable in treating different kinds of ailments with this apparatus-to vary the strength and nature ofthe magnetic field. In treating some," diseases a high-frequency powerful current is desired, and in others a` low-frequency current i o 5 is desired, vand in some cases all posi-" tive impulses may be desired, and in others all negative impulses maybe desired, and

still others a combination of both positive and negative impulses;

kind and qualit-yet ciirirentinay-be' derived a frequency-varying 6o a uniform speed the frequency 7 5 generally ada ted 9o I have found that it' is de-y roo l By means of the api io p aratus shown in the drawings any desired from the main current supplied to the device,

In my above said patents a vibrating magnetic field is established by means of a coil or coils energi'ed by an alternating` current. As such currents are not always obtainable, it is desirable to provide means whereby a direct current can be changed into an alternating current, and this is most readily y accomplished by means of a former or dynamotor.

effect of the magnetic field, 1 have found, de-

rotary trans- The therapeuticf' pends upon the nature of the field, either positive or negative, or alternately positive and negative, and also upon the frequency 1 transformed into an alternating current he-v fore the same is transmitted ythrough the magnetic-field generators; to provide means whereby the current transmitted to the generators can be interrupted or broken, thereby producing the most powerful magnetic impulses; to provide means whereby the polarity of the current transmitted to the magneticfield generators can be controlled, so that all positive impulses or all negative impulses or alternating positive and negative impulses can be transmitted to the magnetic- -field generators; to enable the strength of the current transmitted to the generators tobe regulated by cutting into or out of the circuit more or less resistance, preferably employing incandescent lights for this purpose, so that the operator can see the amount of resistance which is interposed in the circuit; to enable the magnetic-field generators to be energized by complex currents of electricity, such as a regular alternating current and a make-and-break current, transmittedy simultaneously thereto through the same conductors, and to enable a number of electromagnetic generators to be simultaneously energized or operated with the same or with different characters of electric currents derived simultancoi:sly from the apparatus. l will nowdescribe the invention in conne'ction with the accompanying drawings, in which- Figure 1 is a diagrannnaticalview of a complte apparatus, showing several magneticfield generators connected therewith. Fig. 2 is an enlarged sectional view through the interrupter. Fig. 3 is an end view thereof. Fig. el is a view of thc brush-carrier. Fig. 5

is a view of the fretixcncv-varviinr switch.

l l l l l l l l l I i g l i i l l l l l vFigs. 6, 7, 5, i), lofand 1 1 are detail diagramso` illustrating sonic ol' the various phases or changes in the electrical circuits which maxl be made in the apparatus.

I will first describe the apparatus illu.)- trated in the drawings and then explain some of the various current variations which can be produced thereby.

Assuming that a direct current is supplied from the main-line wires A A to the brushes A3 and A of the rotary transformer, an alternating current will be supplied from the brushes B B4 to the conductors b Il. The wires A and A are electrically connected to the poles afd and a2 of the throw switches S. The conductors b and b are connected to the opposite `)oles b b of said switch and, as shown in full lines in llig. 1, are therefore placed in con'rmunication with the main conductors C and D of the instrument.

The conductors C and D are branched. One branch (l2 of the conductor C leads to one of the binding-posts C of the frequencyvarying switch hereinafter described, and

one branch DZo'f the conductor l) is onnected to the bindingost D of said frequencyvarying switch. Suitable rheostats or resistances, preferably lamps, are interposed in the branches C2 and d2. Byl means of this connection any electrical receptive device may beconnected with the posts C and D, and the alternating currenty derived from the transformercan be delivered thereto when the switch Sis in the position shown in full lines in F ig. 1, or if the switch S be turned tothe positionshown in dotted lines in Fig. 1' a direct current could he sent to said receptive device. The branch C2 of the conductor C is furthermore electrically connected, as shown in Fig. 1, to oneof the poles c4 of the single-pole double-throw switch S', by which it is electrically connected, through wire c?, with the brush I, which contacts with one of the commutator-plates I of the current-interrupter hereinafter referred to. The branch D2 of the conductor D is simifarly electrically connected to one of the poles d4 of the single-pole double-throw switch S2, by which it can be electrically connected by a wire4 d5 y'ith a brush i, whichcontacts with the second comnlutator-seginent of the current-interruptcr. 'lhc commutator-plates l and i are tlzcrefme of opposite polarity, but said commutator-platcs are always insulated from each other.

T7115 ccnazfrucicn of imc/"mptain- This iuterruptcr is prrfcrably conslructrd as sho` n more particularly in Figs. 2, 3, and 4. li comprises a mcral disk J, prcfrrably keyed on Ithe shaft of the rotary transformer, .s as to be driven at uniform spccd therewith. To the face lof this disk are secured the comniutaler-plates lo and i. which are preferablyY concentric, as shown in Fig. 2. These plaies l and 'i' are clcr'iricall-v insulated from cach other and from the disk J by means of a plate single-pole doublcand D, as indicated at c2 ICS J', of any` suitable insulating material, which' i brushes 1, 2, 3, 4, 5, 6,

f tact-pieces 1b,

and 10b tbe protected by metal other.

er?, 8b, 9b, aid ich,

is secured to the disk J in any'suitable manner. The plate I is provided with an inwardly-projecting radial extension I2, and

y the plate t Ais provided with an outwardlyextending projection i2 diametrically opposite the projection I2. The face of the insulating-plate J between these projections may plates J2, which are, however, insulated from the disk J and from both the plates I and i. Opposite the plates I and t" and arranged in a concentric series around the axis thereof are a series of 7, and 8, the brushes. 1 and 2, 3 .and ,4, 5 and 6, and 7 and 8 being arranged in pairs dianietrically opposite each The adjacent brushes are placed so far apart that the projections commutator-plates Il and fi will leave one brush before they contact with another. The brushes are preferably constructed as 'shown in Fig. 2, beingsupportc'd in a fixed annular vplate K, attached to a suitable part of the framing byarms K. I preferably em ploy carbon brushes which are retained in tu'- bular brush-holders L, provided with adjustable screw-caps L and with non-conducting bushings L2, which are fitted in openings in the plate lK. The rcaps Llmay be rovided with apertures Z and thumb-screws 2 for the .purpose of securing' the conductor-wires thereto. Each brush is electrically connected by the, wires la, 2, 3a, 4a, 5a, 63,7, and 8a, respectively, to contact-pieces 1b, 2b, 3b, 4b, 5b,`6b, 7b, and 8b, respectively, of the frequencyvarying switch, and said `switch is also provided inline with two additional contacts 9b and 10b, to which one or both terminals of the electroreceptive device may be connected, as hereinafter explained. `Preferably the binding-posts D and C? and con- 2b, 3h, 4b, 5b, 6b, 7b, 8b, 9b, are arranged in alinement beside the frequency-varying switch, which switch is preferably constructed in the form of a'cylinder or controller, the surface of which. cylinder isshown laid out in the diagrammatical View of Fig. 1 and is provided with twelve annular series of contacts adapted to`c ontact, nrespectively, with the binding-posts Duand C and the contact-pieces 1b, 2b, 3b, 4b, 5h, 6b, and which contacts may be brought into electrical communication with said binding-posts by means of brushes d and c", 1", 2C, 3C, 4C, 52,6217, Sc, 9., and plain the,

10C,.-as shown, Inorder to make j operation of 'this interrupter and the fre- .qiency-varying switch', we will assume thatt e commutator-plates I and fi .are in constant electrical connection with the conductors D and C, as shown in Fig; 1, and an electroreceptive device No. 1, (which may be an electromagnetic-field generator, as described in my aforesaid patent) has its opposite terminals connected by suitableplugs with the 12 or i2 on the.

. rupter the'projections .l2 and t2 .the binding-posts 7 b andSb `interrupter in a given time of which is as follows:

Aposts 7b and 8b, respectively. Under such conditions at. each revolution of' the interof the plates I and/ simultaneouslyY contact twice 'with -the brushesl 7 and 8, which are in electrical connection, bymeans of wires 7'1and 8, with l and Ythrough the latterf with y the receptive device. quently each time the circuit is closed by the 'interrupter a current is transmitted from the conductor C through the interrupter tothe receptive device, back through the interrupterto the other conductor D., vThisjcurrent is brokentwicefor each rotation of the interrupter, as the projections I2 and i2 will contact with brushes each rotation. Obviously other electrore' ceptive devices can be put in circuit with the interrupter by connecting their terminals Ywith the pairs of binding-posts 1b` and 2b, 3b and 4b, 5b and 6b.' Inother'words, as many as four electroreeeptive devices could be operated in this manner from t-he interrupter and eachreceptive device'be energized twice for each rotation of theinterrupter without varying or increasing the current. This connectionwould give but one uniform interruption of current, rotates at uniform speed, as it is intended to do. In order to increase .the number of interruptions, 1t is obvious v`that ordinarily 1t would .be impossible to vary the number of interruptions inthe current produced by the of the mterrupter was varied; but as varying of speed is undesirable both onl account of the uncertainty and on account es ecially of the waste in power involved in tliis change of speed I provide' what I terni herein a free quency-varying switch, by means of which i without changing the speed of the inter-j rupter or the number ofv contact-points there on Ia'm enabled to increase the number of interruptions in the .current transmitted to 'the ele'ctrcreceptive device. For this purpose the terminals ofthe electroreceptive device 'may be connected in severalways, one Taking magnetic-field generator No.2,` for'example, its opposite terminalsmay be plugged to the bindingpostsQb and 10b, as shown in diagram in Fig. 1. In the vposition shown in said figure, however, theseconnections remain as above described, with the frequencyevarying switchesas shown in Fig. 1, with all contacts open, so that nd current will pass through, the magnetic generator No. 2; but as soon as 'the switch is moved so as to cause the brushes 9b and 10b to come into contact with oneof the annular series of contacts thereon .the current will be established through the electroreceptiif'e device' No: 2.. Before explaining the passage of this current itis desirable to understand the arrangement 'of the contacts on this frequencyvaryi-ngswitch.

Conse- 7 and 8 twice during assuming that the interrupter l unless the speed I j OO By referring to Fig. l it will be's'een that there are seven dil'erent groups or contacts vertically disposed on said cylinder. The first group of contacts contains four vertical rows of contact-points. In cachot1 ythese rows every alternate contact-point is elec trieally coinncted. .The lower contact-point in each row contacts With the brush l, the second contacts Withthe brush 9", and the third contacts ivith the brush 8, and so on upd the row. if now the frequency--varyinir switch be rnoved so `as to bring all the'iirst row of contact-points in the iii st group T in contact with the brushes 7c, 8, 9C, and 1,0", (see diagram, Fig. 6,) the vcurrent will llov; from the interruptor through the `bindingpost 7b and brush 7 C and the contacts in the first row of series T, to brush 9, to post Sib, to the receptive device No. 2, and return through post 10", brush 10C and suitable contacts inthe first row of series lV to brush S", andthence back to the variator. In this position the receptive device No. 2 would rcceive the same current as receptive device No. 1 and With the saine number of interrup tionsftowit, two for each rotation of thc interrupter. it thc frcquency-variator be moved over to bring the second row ol" contacts in' series Tinto contact with the brushes in operative position, the current will not only 'liow through the brushes 7 and 8', as described, but the circuit will also be closed through the brushes C and 6"', the interruptor, and receptive device No, 2, so that additional interrupted currents or impulses will be received by receptive device No. f2 whenever thc projections .i2 and i2 on the interruptor contact with the brushes 5 and 6. W'hen this second series of contacts is iin-position, the` receptive device No, 2 will be energized four times for each rotation of the interruptei" Without increasing its s eed, and thus if the third row of series The brought into position the receptive device No. 2`will lic energized six times, and it the fourth rmt-the lbrought into position the receptive'device will be energized eight times'ior each. rotation of the interrupter without having to increase the speed of the interrupter or changing the current. Thus by simply niovinp; the irequen cyf varying switch the number of impulses trails- Inittcd to the receptive device electrically connected with the contactneinis@h and h can be varied from two to eightfor each revolution of the interrupterWithout varying the speed of the interruptor or the speed` of thel inotor orchang'ingtbeintensity ci the cur-` rent, and this provision oi means tor chang? ing the frequency of impulses trfnsrnitted iro n1 the device without changing the source of electricity and the interrupter operating at uniform speed i believe lo be entirely novel and formsone of the principal features ol my present invention. contact-points on the frecpicncy--varg yrushed te tinx main c The other series of seme?? switch have practically the saine inode of op eration or e'l'ect as the series already dcscriled, but are designed to he used in connection with dil'erent poiarities and cl'iaracters of .currfffnt and will be hereinafter referred to,

lin/nsmiit'iug con? nous and inter# f currents 7i-rougit im sci/mc rece, '/:c der/n -A in some cases it is desirable to transmit an uninterrupted and an interrupted current throughthes \t` deif'ice` This can "ihe rccclitive dc 'ne accomplis vice (indicated as o, f he electrically connected io the posts il and (U. Assuming that an alternating current is bein; l`uro ducten; C and l), it is obvious that sucn currn will pass frein post C to the receptive dm .ce No. 3 and return thence to thcvpia l' l?" and in this nianncr complete thil circuit, the receptivo device No. 3 being;w continuously and regularly energized by said current. ln order to supply in addition an interrupted current to said receptive device, thc interrupter is put in circuit Lwith conductors C and D by branch conductors (1 and l, as indicated in Fig. l, current-reculatingg devices or rheostats, prei'- crably lamps, being; interposed inthe branch circuits i" and il", as illustrated at c and (W. The ln'anches t and l are connectml with the poles c7 and d? oll the single-pole doublethrow switches S/ and S2, respectively, and when a receptive device, as No. 3, is connected to the posts C and D", as .lescribed, the switches S and are oy'iened., so as to break; contact with the posts t." and D1, and one or" these switches S and Si: closed against the other pole e? or di.

lille will assume that the switch in" is chiscd against the post c7 andtheswitcl15i"leltopenA The branch current will then llouv through the conductors C and D, switch and Wire C5 to the connnutator i', and as the interrupter rotates of course thc electrical cond` ncction is established temporarily between the commutatore le and t" with the several binding-posts il, 2*, 3l', 4t", 5h, 6b, 7'), and 8b. (See diagram Fig. 47,) "hen the second series of contact-points il or the frequencyvarying switch lare brought into play` it the switch turned so that the Vtir vertical row o? the second scri.e of points be iirou" into ccntactjwith the bindingniosts C to 51), inclusive, (sce diagram Eig. 1,) a complete circuit will be established. lroin the interrupter through the binding-posts and contacts in series U with the post C, and thence from the post il to the receptive device No. 3 and back tothe post D, and thence out of the machine, thus completing the interrupted circuit through 4thereceptive device No.

3 simultaneously with the continuous therethrough due to the dii' between the `uuu branches posts o aiu, if,

circuit With the set of contacts shown in seriesU, I

- varying switch would be used for the inter- 4 rupted current and the same number of re,'ct current instead`of the alternating cur-- binding-posts 9b and D.

' course of the current will be as follows: The

.the current transmitted through the recep- -rect current, it can be done in varlou's ways -to the bindingpost D", which is in electrical can obtain from two to eight interruptions of tive device-No. 3 without changing the speed of the interrupter and without varying the current directly transmitted 'through the interrupter from the branches D2 and C2.

The polarity of the interrupted current transmitted through the receptive device N o. 3 simultaneously with the continuous current can bechanged by opening the switch entirely and closing the switch S2, so as to place it against the post 17. (See diagram Fig. S.) This cuts the branch C out of circuit, but places the .branch C2 lin circuit with the interrupter., In thiscase the third series V of contact-points of the frequencychanges in interruptions produced, as is obvious. In this third series ofcontact-points instead of contact being made with the brush of binding-post C the contacts are made with the brush of binding-post D".

In some cases itis desirable to use the dirent, and thiscan be readily done by throw-3 ing the main switch S so as to cut out the connections between the conductors C and D and the alternating-current wires b and bA and put the-conductors (land D into connection with the wires Av and A', this position of 'the switch S being indicated in dotted lines in Fi f. 1. In this position the direct current will e su lied to -the main conductors C and D. I 1t be desired to interrupt this diby the apparatus'shown and when a plied to my electromagnetic field-generatoril find it 'is frequently desirable to energize the magnets by an interrupted current of one'polarity.

AZZ-positive impz/,Zsea--In case I desire to obtain only interrupted positive impulses in are made, using the seriesl/V of contactpoints on the switch. The direct current is transmitted through the conductors C and C, switch S, and wire c5 to the interrupter and passes thence'to the several bindingposts 1b to 8b, inclusive. The opposite terminals of the receptive device should be electrically connected in this instance to 'the (See diagram Fig. 9.) Then the frequency-varying switch is shifted to bring one of the vertical rows of contacts in series W into the circuit,and the positive current passes from the conductors C and Ci to the switch S', wire c5 to the interrupter, and from the latter through the -binding-posts 1* to 8b and through the row of contacts in series W to the binding-post 9b, th encev through thereceptive device N o. 5, Fig. 9,

tact-posts lb to 8b, inclusive. device in this case should have its terminals connection with the otherconductor D, thus i closing the circuit and obtaining only positive impulses (four to eight in number) in the receptive device, according to which row of contacts in the series W are used.

AZZ-negative impulses-It is sometimes desirable to obtain all-negative impulses. In lthis case the switch S is opened. The switch S2 is closed against the postali, so that the negative current passes from conductor D through branch D', switch 72, wire d5 to the interrupter, and thence to the several con- The receptive connected with the'binding-p'osts l0b and C, The frequency-varying switch is then shifted so as to bring one of the vertical rows of contact-points of the series X into operative position, and-the circuit will then'be as follows, (see diagram Fig. 10) from conductor D through branch D', switch S2, wired5 to the interrupter, thence to the binding-post 1El to 8a, thence through the row of contacts in series X.'of frequency-'varying switch to the binding-post 10b, thence through the receptive device to the post() and branch C2 to the conductor C, thus completing lthe circuit, the number of interruptions 'of the current depending upon which row of contacts in series X is in operativepositiomonly negative impulses being transmitted through the Areceptive device. Reciprocating 7eZLL-In somecases when using the device in connection with my electrotherapeutic device it is desirable to btan a reciprocating all-positive or all-neglgative foo field-that is, a field with but one polarity and in which the waves are thrown offfirst from on side of the eld and then from the other side. Thisis particularly de irable in my electrotherapeutio apparatus pa ented to me, as above referred to, wherein two ma nets are employed at opposite sides or ends of the field, and by, energizing these magnets in alternation only positive or only negative currents can be obtained and the desired rel I0 ciprocating of the all-positive or all-negative field. To accomplish this, the magnets must l be connected independently and not in series or multiple. O AZZ-negative reciprocating jieZd.-To obtain 1 i 5 an all-negative reciprocating field, for example, each of the magnets of the electromag- .Iletic field-generating apparatus should have one terminal connected to the binding-post C, and the other terminals of the Amagnets are r-zo respectively connected to the binding-posts 9b and 10b. The switch Sl being open and vthe switch S2 being closed against the post C17, the frequency-varying switchis shifted sQ-as to bring one of the vertical rows of contacts in the series Y into operative position. With this arrangement (see diagram Fig. '11) the current will flow from the conductor' D to branch D, switch S2, and wire d5 to the inter? rupter, thence to the binding-posts Ib to 8b, 13o

respectively, thence through a row of contacts .1n the series Y to the binding-posts 9b and 10b,

will be transmitted alternately through the' posts 9b and 10b to the respective magnets.

All-positive reciprocating cldwlo obtain an allfposi'tive reciprocating iield, the switch S2 is open and the switch S is closed againts the post c7, so as to be connected to the conductor C through branch C, switch S', and wire c5 to the interrupt/er, from which the current will be transmitted to the posts lb toS, respectively. ln this case one terminal of each magnet in the electrorecep tive device is connected to the binding-post D, and the other terminals of the magnets are connected, respectively, to the binding`- posts 9b and 10b. The frefluency-varying switch canbe shifted so as to bring one of the rows of contacts in the series marked Z into operation, whereupon the current will liow from conductor C, switch S, wire c5, the

interrupter to the posts 1b to 8b, through a row of contacts in the series Z, through the binding-posts 9b and 10", through the magnets of the receptive device back to the binding-post D, thence to the conductor D, and the magnets will be energized in alternation with only positive currents.

l have indicated in the drawings two duplicate sets of contacts Y and Z, but it is obvious that oneset of said contacts could be used for-both the all-positive and the all-negative reciprocating fields. i

VPreferably l provide condensers, asshown at ll, between each pair of conductors la and 2, 3 und 4f, 5l and (3, yand 7 and 8 for the )ur )ose of takin@ care of the counter electro- 1'? motive force resulting from the action of the condiuitor. A condenser may also be interposed between the branch conductors D2 and (l2, us indicated at H. I also find it practicable to use an electromagnetic generator in connection with these concensers, one receptive device so connected being indicated as No. 4 in Fig. 1 ofi the drawings.

From the foregoing it will be readily seen that by means of this apparatus l am able to produce a great variety of currents and to interrupt the current eelivered to the receptive device a greater or less number of times by means of the frequency-varying switch wit hout changing the speed of rotation ofthe inrerruptcr itself or tile motor.

Having described my invention, what l. claim as new, and desire to secure by liet-ters Patent, is

l. rlhc combination ol a uniformlyeoperl ating interrupter,an electroreeeptive device,

sans?? and means for amplifying or changing the number of interruptions transmitted from the interrupter.

2. The combination of a unifinmly-operu ating rotary current-.nterrupter, an electroreceptive device, and means for amplifying orr changing the .number of interruptions transmitted from the interrupter to said device.

3. ln combination, an electroreceptive device, a source of electrical energy, a uniformly-operating interrupter interposed in the circuit between the electrical supply and the receptive device, and means interposed in the circuit between the interrupter and the electroreceptive device for varying the number of interruptions without varyingl the speed or regularity of operation ol the interrupter itself.

4. In combination, a receptive device, an interrupter, means for operating the interrupter at uniform speed, electrical'connections between the interruptor and the source of electrical supply and between the interrupter and the eleetroreceptive device, and means interposed in the circuit between the interrupter and the elcctroreceptive device whereby the number of interruptions transmitted to the recept-ive device may be increased or diminished without varying the speed of the interrupter.

5. kIn combination, a receptive device, a rotary interrupter, means for driving the interruptor at uniform speed, electrical connections between the interrupter and the source of electrical supply and between the interrupter and the electroreceptive device, and a frequency-varying switch interposed in the circuit.' between the interruptor and the electroreceptive device whereby the number of interruptions transmitted to the receptive device may be increased or diminished.

6. In an electrical apparatus, the combina.- tion of a transformer for changing the current, an electroreceptivc device through which the transmitted current is conducted, an interrupter interposed between. the transformer and the receptive'deviee,and means whereby the number of interruptions in the current transnitted to the receptive device may be varie' -without varying the inten rupter.

V7. ln an electrical apparatus, the combination of a transformer for changing the current, which the transmitter current is conducted, an interruptor interposed between the transformer' and the receptive device, means for operating the interrupter at uniform speed, and a frcquency-varymg switch whereby the number of interruptions in the current transmitted to the receptive device may be varied without varying the speed of the interrupter or the current.

an electroreceptive device throughy llC . tive device,

branch of the current through the interrupter` rupter to the receptive device, and mieans for interruptions transtive device,

vss

8. In combination, a source of electrical energy, an interrupter, a receptive device,

'means for transmitting one current direct through the receptive device, and means for directing another current' through the intery rupter to the receptive device.

9. In combination, a source of' electrical energy, a uniformly-operating interrupter, a receptive device, means for transmitting part of the current direct .through the recepand means for directing another to the' receptive device. t

10. In \combination, a source of electrical energy,an*interrupter,` a receptive device, means through the receptive device, ,means for direoting another current through the' inter# amplifying the number of mitted from the interrupter to the receptive device.

11` In combination, a source of electrical 'I' energy, a uniformly-operating interrupter, a`

receptive device,

means for transmitting part ofthe current .rect from the source of energy to the receptive device, means for sendin a current to the receptive device through t e interrupter, and means interposed in the circuit between the interrupter and the receptive device for varying the number of interruptions without varying the speed of operation rot the interrupter.

13. In combination, a transformer, ari-injterrupter, an electroreceptive device and means interposed in the circuit between the nterrupter and the electroreceptive device for varying the number of interruptions without varying the speed of operation of the inl terrupter.

14. yThe combination of asource of elecl tricalenergy', a transformer; an interrupter,

electrical connections between the trans.- former and interrupter, an electroreceptive device, and means interposedy between the interrupter and electroreceptive device for varying the number of interruptions ot the current transmitted to the receptive devicefrom the interrupter, without varying the speed of the interrupter or varying lvthe current. l 1

15. In combination, an interrupter, arec eptive device, means for transmitting cur-f.

rent transmittedifrom out changing the speedof the latter. f 16. The combinationof a transformer, an

number of interruptions for transmitting a current direct interruptions transl .rent vmay be a source of electrical energy, 'an .inw terrupter interposed in the circuit between vspeed of the interrupter,

ingswitch in said circuit rent"from the iiiterrupter to the receptive device, means for varying the polarityvof the current transmitted from the interrupter to the receptive device, and means for varying the number `ot interruptions of the curtheY interrupter withinterrpter, electrical connections between the transformer 'and .i nterrupter,t whereby 'either a direct or alternntingcurrent may be supplied to said interrupter, a receptive device adapted to be connected in circuit with the' interrupter, and means for varying the transmitted to the receptiveA device without ,varying the speed vof the interrupter.

17. The combination of a transiorner, an interrupter, electrical connections between the transformer ,and interrupter, whereby either a direct or alternating current may be supplied-to said interrupter, a vreceptive device adapted to the interrupter, and means for varying the number of interruptions transmitted to the receptive device without Vvarying the speed of the interrupter. l

. 18. 'The combination of. a rotary trans-A `whereby either a direct `or alternating cursupplied to said interrupter, a

receptive deviceadapted to 'be connected in circuit' with the interrupter, means for 'vary- 'ing the'number of interruptions transmitted to the receptive device without varying the and means whereby the polarity othe` current transmitted to the interrupter maybe varied, substantially' as fm5.A

described.

19. The combination with in an electrical circuit, of a requencyfvary- .rovided withv a series voi contacts, wherebythe number of .interruptionsproduced by the interrupter can be amplified between the interrupter and receptive device. 20.v The combination of aninterrupter, a series of brushes contacting therewith, and a vseries of bindin -posts electrically connected with Saidbri'1 sli es;r with a frequency-varying y switch having a series o'f contacts adapted to an interriipter be connected in circuit with 1 former, an interrupter, electrical connections ybetween the transformer and interrupter,

ICO

be brou ht into th electric circuit to vary the. num er off, interruptions transmitted to ythe electroreeeptive device. i

21.' The combination of an interrupter,-an

electroreceptive device, a frequency-varying switch interposed in the circuit interrupter .and the receptive provided with aseries of contacts whereby between the the numb er of interruptions produced by the interruptrcan be changed or amplified between the'interrupt'er and receptive device by shittingthe switch.

22.|In combination, an interrupter, a

device, and

ing;` :t seria,` ot contents which maybe brought into oyiottive relation with said binding )vente to v; y the number ot interruptio'l transmitted to the electroreceptive device.

23. in eombinutinn, :t transformer, :in interruptor operatori zit uniform. speed, electrical Connection between. :Said trene- Vformer and the 'ratei-runter, en eiectroreceptive deviee, und. :t 'ire/queiicy-varying :switch interposed in the circuit hetnet-fn the in.terunter :ind whereby' the number of interruptions oi' the current transmitted through 'the interi-noter to theI receptivo device cnn be rzirie or nur piiiied without ehongiiur; the sneed oty the inteiwupter.

f-f. in combmetten, at trmuaiornier, un

interruptor operated et nnihn'ni speed, eleotrieiti conneethm .twtwaen Said tran y'oriner und the interruptor :in ricetroreeopti\e devise, and. :t 'i 'icy-:':ifrying Switch interposed in the cire 'y hetn'( n "the interrut and the eiee"rereecg'itite device, .vzeir' the number e, interrno of the current transmitted ti Jongh the interrnter to the n receptive. device een 'ne tt-nnliiitied without ehngug the Speed of the interruptor, und 'ineens whereby the poteri n' een be varied,

25. In eornbiirrtion, a. rotaryT trunehu'iner) interrupt@ @printed thereby :it nni'orin the electroreceptire doi/ite` of the enrrcnt V tepeeri, electrica-l eonneetioi'i hetween said trzuisiiorner ant'i the interruptor, hereby either iiireet or alternating currents ::ni he transmitted to Said interruptor) in electroreceptive devi 'e, sind :i i'reqtrolley-varying Switch interposed in the circuit between the interruji ter zuid the eieetroreeepti've device, whereby tin number of interri'iptions 01 the current transmitted through the interruptor to the receptive device .can be Varied. or ampiiiieil -witiunit changing the sneed oi the inteiirnpter.

2G. in combination, e rotary transformer, in nite"ruptcr operated thereby :tt uniform abouti, elect/rioni connection hetween Suid trmisilioriner mit the interruptor, wherebyY either direct or aiter'mt-inlf' currents een he tren.' nit/ted to sind inter titer, an eleetroreceptive device, and :t t'reqiienejtfmvarying Switch interposed in the el 'Cuit ixetween the interrnpter :1nd the eiectroreceptive device. hereiiry the number of interruptions of the current t 'ensrnitted through the interruptor to the receptive device can be varied or enipitied. without changing the speed of the .interi-unter, anni mesme whereby the polarity of the current een. be varied` ln testimony that ,t chiin the foregoing as my own i :ttix my signature in presence of two witnesses.

EMILE BACI'IELET'. 

